Y4 Scratch maze

Video instructions 1

Play this game!  Use arrow keys to control the cat.  Can you get to the door at the top?

What different things have I had to draw and program to make this game?

 LF1 Saving and opening Scratch work

1. Click on this https://scratch.mit.edu/projects/205492019/editor/
2. Click: File – Save to your computer
3. Close the tab!
4. Go to Scratch
5. Click: File – Load from your computer
6. Don’t forget to save!

LF2 Movement controls

Video instructions 2

1. Scratch cat script
   1. Make Scratch move up, down, left, right when you press the arrow keys:
      1. You will need 4 groups of blocks
      2. Events – when up arrow pressed…
      3. Up = change y by  5 ; Down = change y by -5
   2. Test it out by trying to get past the Egyptian god!

Video instructions 3

• Think:
  • How can we make the cat go a bit faster?
  • How could we stop Scratch going through the walls?

LF3 Follow a path

Video instructions 4

1. Look at the Roman soldier script – can you work out how it works?
2. RH-click on the Roman soldier and duplicate to get two more – one for each level
3. Replace the glide blocks by doing the following:
   1. move it to where you want it
   2. select glide blocks (they will have the correct numbers for x and y)
4. Test the game – make sure it is just possible to get past by going into the tunnels.  Change the speed of the cat and/or soldiers if needed.

LF4 Makes sprites interact

1. Scratch Cat script
   1. Add blocks so that
      1. When Scratch Cat touches a soldier, it goes back to the beginning (Clue: , green flag, forever, if, touching baddie, go to…)
      2. when Scratch Cat touches the door, the background changes (Clue: green flag, forever, if, touching door, next background)

Video instructions

LF5 Use drawing tools

1. Stage – Backdrops
2. RH click to duplicate
3. Edit the second backdrop to make a new level
4. You could also draw new backgrounds
   1. Welcome screen = maze with title of game, instructions and a “start” button (sprite(
   2. Game over screen

LF6 Lives

1. Teacher DEMO
2. Variables – make a new variable called Lives
3. Set variable to 3
4. Add into the block that sends Scratch back to the beginning – change Lives by -1
5. New set of blocks = forever, if, lives = 0 , change backdrop to game over.

LF7 Coins

1. Draw or find a new coin sprite
2. Make a new variable called Score
3. Use this code for the coin
4. 

Scratch self assessment